Automatic embroidering-machine.



H. SAURBR. AUTOMATIG EMBROIDERING MACHINE.

APPLIUATION FILED JUNE 19, 1911.

Patehted Sept. 9, 1913.

2 SHEETS-SHEET 1.

ifiiizwmr .dwmalA PLANOGRAPH co,, WASHINGTON. D. c.

must be able to attain equally progressmg HiProLYr SAURER, 0F Armor, swi'rznRLAND;

AUTOMATIC EMBROIDERING-MAGHINE;

Specification of Letters Patent.

Patented Sept.- 9, 1913;

Application filed (Tune is, 1 911. Serial No. eaei.

T 0 all whom it may concern I Be it known that I, HIrPoLY'r SAURER, a citizen of the Republic of Switzerland, residing at Arbon, Switzerland, have invented new and useful Improvements in Automatic Embroidering-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification;

This invention relates to improvements in automatic embroideringmachines and consists in a device for moving a frame of automatic embroidering machines in any direction in a plane. For this purpose two components are necessary which are independent from each other and adapted'to attain positive and negative values. Since said components are substantially obtained in the same way it is necessary only to consider one of the two components. This component all positive and negative values from zero to a certain maximum value, that means all values of an arithmetical series, for instance +1, +2, +3, +4: etc., and -1, 2, 3, 4L etc. The progress or' common difference between the terms decides the accuracy of the motion in the direction of this component.

, With some of the devices hitherto in use the values of the single terms were obtained each by a separate mechanism, with other devices the values were obtained by combination, addition and subtraction for instance, of terms of a series which progresses otherwise than the desired series does, all single values being composed therefore of a plurality of elements. The arithmetical series was formed by combining the terms or elements of a single series as a geometrical series for instance. At the other side two series were applied and their terms or elements combined. in such a way that the desired arithmetical series was formed. Hereby one term only of the one series was combined with one term only of the other series.

According to this invention the terms of more than two' series are combined with each other to obtain the positive and negative values of the arithmetical series of each compongnt. If there are three series for instance it is possible to combine always one term of the first series with always one term of the second series or of the third series to form a desired value. Moreover it is possible to combine one term of the first series with one term each of the second series and of the third series at the same time.

Hereby a more simplified construction is attained or, if the same number of original terms is used, a larger arithmetical series will be obtained than before or an arithmetical series with smaller common difference, that means higher accuracy, since, as mentioned above, the common difference of the series decides the accuracy of the motion of the frame. Moreover, if a more simplified construction is being applied, the inaccuracy will be dimiiiished, since for each combination only to 1- as many elements are needed; as with the devices hitherto in use, assuming the same wearing of the parts in both cases.

The devices mentioned above applying two series need a reciprocating motion for producing a stitch of sufficient length, while the device according to this invention has a more simplified construction, because toothed wheels can be applied by the use of more than two series with only a small number of elements. I

Figure l of the accompanying drawings is an elevation of an embroidering machine to which the said device is connected. Fig. 2 is a plan view of the device by which one component is to be formed, the shafts of the gears being shown as transferred into the same plane. F ig. 3*is a section on line AB of Fig. 2, and Fig. 4 a section on line CD of Fig. 2, the shafts in both these figures being at their real positions.

The shafts l and 2 are arranged coaxially. The shaft 4, rotating at constant speed imparts an intermittent rotation to the shaft 2 by means of a cam mechanism 3, the rotation of the shaft 2 being always in the same direction and the angle of each rotation the same. The two shafts 1 and 2 are connected to each other by means of a reversing gear 5, the connection being so that the shaft 1 rotates intermittingly for the same amount but in opposite directions to the shaft 2.- Toothed wheels 6, 7 and- S of different diameters are fixed.- to the shaft 1 and toothed wheels 9, l0 and 11 of different diameters are fixed to the shaft 2. The

in connection with the shaft 52,

diameters of the wheels 6, 7 and 8 are equal to the diameters of the wheels 9, 10 and 11 respectively.

As shown in Figs. 1 and 3, six shafts 12, 13, 14, 15, 16, and 17 are arranged around the shafts 1 and 2. The shafts 12, 13 and 14 belong to the gearing mechanism of one component, and the shafts 15, 16 and 17, which are not shown in Figs. 2 and 4 to the gearing mechanism of the other component. Since both mechanisms are similar to each other in the following, the mechanism only of the shafts 12, 13 and 14 will be described.

Each of the shafts 12, 13 and 14 carries slidable on keys two toothed wheels 19 and 20 of different diameter, both the wheels being connected to each other and to a sleeve 18, two toothed wheels 22 and 23 both of the same diameter, connected to each other and to a sleeve 21 and two toothed wheels 25 and 26 of different diameter, both the wheels being connected to each other and to a sleeve 24. The wheels 19 and 26 and the wheels 20 and 25 are always of equal diameter. The shaft 13 carries free to rotate a toothed wheel 27 to which is secured a bevel wheel 28 of a differential gear 28, 29, 30, 31. The bevel wheels 29 and 30 are free to rotate on journals 32 laterally fixed to the shaft 13. The bevel wheel 31 is free to rotate on the shaft 13. A bevel wheel 35 fixed on the shaft 34 engages a bevel wheel 33 secured to the wheel 31. The

wheel 27 engages a wheel 36 of smaller diameter which is free to rotate on the shaft 12 and fixed to a bevel wheel 37 of the differential gear 37, 38, 39, 40. The bevel wheels 38 and 39 are rotatably supported by axles 41 which are laterally connected to the shaft 12. The bevel wheel 40 and the spur gear wheel 42 are rotatably mounted on the shaft 12 and secured to each other. The wheel 42 engages a toothed wheel 43 of smaller diameter.

The shaft 34 is mounted outside of a case 44' containing these gears (Fig. 1) and carries a chain wheel 45 which is by means of a chain 46 connected to a chain wheel 47,

the latter being rotatably supported on the top of the standard 48 carrying the pattern board. The chain 46 is connected to one arm 49 of the cross guiding the pin 50 of the pantograph, the motion of which is imparted to the frame. The other arm 51 is to which motion is imparted in the same way from the shafts 1 and 2 by gears according to Fig. 2 and by shafts 15, 16 and 17 (Fig.

The three shafts 12, 13 and 14 rotate at speeds according to the series for one component and the shafts 15, 16 and 17 according to the series for the other components. By displacing the wheels 19, 20, 22, 23, 25, 26 on the shafts 12, 13, 14, 15, 16, 17 in a suitable manner the wheels 19-26 are separately caused to engage wheels mounted on the shafts 1 and 2. Hereby motions of rotation of differentvalues and of positive or negative direction are imparted to the shafts 34 and 52. The displacement of the wheels 1926 is positively and automatically effected by the Jacquard apparatus which by suitable means actuates the sleeves 18, 21 and 24. If, for instance, three series are chosen according to the following vertical rows:

an arithmetical series is obtained by com bining the terms of these three series either positively or negatively or both positively and negatively.

I claim 1. In mechanism for imparting movement to the frames of automatic embroidering machines, the combination with a shaft, a plurality of different sized gear wheels thereon and means to impart intermittent rotation to said shaft and wheels; of more than two shafts parallel to the aforesaid shaft, a plurality of gear wheels slidable but not rotatable on each of the parallel shafts and arranged to gear with the gear wheels on the first shaft, mechanism to cause the selective engagement of one or more gear wheels on the parallel shafts with gear wheels on the first shaft, and differential mechanism in operative relation to said parallel shafts whereby their movements are combined, an actuating element to which the combined movement of the parallel shafts is imparted from which the embroidery frame is actu ated.

2. In mechanism for imparting movement to the frames of automatic embroidering machines, the combination with a shaft, a plurality of different sized gear wheels thereon and means to actuate said shaft and wheels; of more than two shafts parallel to the aforesaid shaft, a plurality of gear wheels slidable but not rotatable relative to each of the parallel shafts and arranged to gear withthe gear wheels on the first shaft, mechanism to cause the selective engagement of one or more gear wheels on the par parallel to the aforesaid shaft, a plurality of gear wheels slidable but not rotatable relative to each of the parallel shafts and arranged to gear with the gear wheels on the first shaft, mechanism to cause the selective engagement of one or more gear wheels on the parallel shafts with gear wheels on the first shaft, and differential mechanism in operative relation to said parallel shafts whereby their movements are combined, and an actuating element to which the combined movement of the parallel shafts is imparted and from which the embroidery frame is moved.

4. In combination, two shafts, reversing mechanism between them, different sized gear wheels on each shaft, a plurality of shafts, gear wheels thereon arranged to gear with the gear wheels on the two shafts, mechanism for selectively causing the engagement of said gear wheels, an elementand differential mechanism between said parallel shafts whereby their movement may be algebraically combined to impart movement to said element and from which the embroidery-frame is moved.

5. In combination, a pair of alined shafts, a reversing mechanism between them, a plurality of gear wheels of diiferent sizes on each shaft (the sizes of the gear wheels on one shaft corresponding to those on the other shaft) a plurality of shafts parallel to said alined shafts, gear wheels thereon arranged to selectively gear with the gear wheels on the alined shafts, differential mechanisms connecting said plurality of shafts, a driving shaft to which the algebraic sum of the movements of said parallel shafts is imparted in varying ratios through said differential mechanisms, a second set of parallel shafts, gear wheels thereon arranged to selectively gear with gear wheels on the alined shafts, differential mechanisms connecting said second set of shafts, a second driving shaft to which the algebraic sum of the movements of the second set of shafts is imparted, and means to rotate one of the alined shafts step-by-step, whereby both sets of parallel shafts will be driven from said alined shafts, said driving shafts imparting their movements to an embroidery frame to be moved.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

HIPPOLYT SAURER.

Witnesses ERNST FISCHER, AUGUST Runes.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ?atents, Washington, D. 0. 

